标题: 关于用逗号把连词隔开重不重复主语的问题！。。。 [打印本页] 作者: gracezz 时间: 2010-4-28 22:05 标题: 关于用逗号把连词隔开重不重复主语的问题！。。。 74. (28503-!-item-!-188;#058&003635) Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of natural selection, favored due to their enhancement of reproduction or survival, but that they are simply random by-products of other evolutionary developments. (A) due to their enhancement of reproduction or survival, but that they are (B) due to the reproduction or survival they enhance, but they are (C) because they enhance reproduction or survival, but (D) because they enhance reproduction or survival, but are (E) because of enhancing reproduction or survival, but are